Pokemon GO: Celesteela Raid Guide | Counters and Weaknesses

gamerant.com:

Any Legendary Battle Raid in Pokemon GO can present a serious challenge, and they all require careful planning and counter roster strategy consideration before spending a Raid Pass and entering the fray. The Ultra Beasts are certainly no exceptions. Trainers who want to face off against Celesteela in the mobile AR game are going to need to optimize a carefully planned counter roster to ensure victory and earn those exciting encounter, XP, and item rewards after the fight.

Players who are familiar with the core line of Pokemon games may already be aware that Celesteela is a dual Steel-/Flying-type, which means trainers are able to use an Electric-/Fire-type strategy to defeat the big boss. At this point in Pokemon GO's history there are a ton of fantastic counter options to take advantage of those weaknesses. Players who have been stockpiling some Mega Energy will be able to put that to good use if they are willing to part with the resource for these battles.

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As always, even with an ideal counter roster, this Ultra Beast battle is going to be pretty challenging. That means that trainers will want to get an ideal counter roster in place and also enter the battle with a handful of other players who also know how to take advantage of the Ultra Beast's weaknesses. There's nothing worse than burning a Premium Raid Pass on a failed attempt, so make sure enough players are around to ensure a victory before entering the Raid Lobby.

This Ultra Beast is a Steel- and Flying-type. That means that Celesteela is weak to Electric- and Fire-type moves.

Charizard (Mega Y) — Fire Spin/Blast Burn

Charizard (Mega X) — Fire Spin/Blast Burn

Manectric (Mega) — Thunder Fang/Wild Charge

Houndoom